Serverless POC: Create a serverless mode lambda layer for deployment

[obenkenobi]

Description

The goal of this ticket is to make a lambda layer that deploys a serverless mode Java Agent. In it, the new relic extension needs to be bundled in.

Also specific agent configs needs to be enabled based on what the serverless CDD provided.

Changes should be made in a seperate branch of the lambda layer repo:

https://github.com/newrelic/newrelic-lambda-layers/tree/master/java

Acceptance Criteria

A new lambda layer is created that bundles a serverless mode java agent. In it the new relic lambda extension should be bundled in.
It should first be tested by building it locally and deploying it to an existing deployed lambda to verify it is able to function.

[Newrelic-Boomi]

https://new-relic.atlassian.net/browse/NR-503503